Oil-feeding mechanism.



G. PORNACA.

oIL FBEDING MEGHANISM.

APPLICATION FILED IBB.17, 1.9()9.

Z m AM c U n 57m,

2 SHEETS-SHEET 1.

"f @Hom/uz i 'raras Arena-'onerosi GUIDO FOBNACA, OF TURIN, ITALY,ASSIGNOR, BY MESNE ASSIGNMENTS, T0 F. I. A'. T., OF POUGHKEEPSIE, NEWYORK, A. CORPORATION OF NEW YORK.

OIL-FEEDING MZECI-IA'NISM.

Specification of Letters Patent.

Patented July 19, 1910..

Application led February 17, 1909. Serial No. 428,455.-

To all whomit may concern:

lle it known that l, Gumo FonNAcA, a subject of the King of ltaly,residing` at Turin, in the lrovince of Piedmont and Kingdom of Italy,have invented certain new and useful Improvements in Oil-FeedingMechanism, of which the following is a full, clear, and exactspecification.

This invention relates to oil feeding mechanism for an internalcombustion engine and has particular reference to a mechanical oilfeeding system wherein the oil is forced mechanically to the variousparts of the engine, such as the crank shaft bearings, the connecting`rod, and the piston, together with provision whereby the excess oildrains oit and is used over and over.

A further feature of the invention relates to means whereby the operatorcan ascertain from a gage by an operating valve whether the oil is beingsupplied with the desired pressure.

The invention will be more fully shown in connection with thedescription of the accompanying drawings wherein- Figure 1 is asectional view of an aut-omobile ,engine embodying the invention; Fig. 2is an end view; Fig. 3 is a side view; Fig. 4 is an oil gage to indicatethe pressure; and Fig. 5 shows the valve mechanism for obtainingindications of the oil pressure.

1, 1, 1, 1 represent the cylinders of a combustion engine each having apiston 2, connecting rod 3 for driving crank shaft 4. The cylinders ofthe crank shaft are supported by a frame or casing 5, provided withcrank shaft bearings 6, 6, 6, the frame being so constructed that thebottom member 7 forms a pan having an oil reservoir 3, which can beremoved from beneath the engine if desired.

9 is a filling spout for pouring oil into the reservoir 8 and from thereservoir a pipe 11 leads to an oil pump 12, which may be of anyapproved construction, though as herein intended it consists of what isknown as a gear pump, consisting of two gears inclosed in a casing anddriven from one of the cam shafts of the engine. The cam shafts aredriven from the gear 13 on the crank shaft 4. The arrangement of gearingbetween the gear 13 and the shaft which drives the pump 12 has not beenvparticularly illustrated, same not being a part of this invention. Thedischarge pipe 14 from the pump branches, and one branch 17 has taps 18which lead to the various crank shaft bearings G. At each crank shaftbearing there is a radial hole 2() leading to a longitudinal passage 21extending through the crank shaft, which passage 21 may be formed bydrilling holes and then plugging the ends. At each crank pin 22 a hole23 connects with a pipe 24 carried by the connecting rods 3 leading upto the wrist pins 26, connected with the pist-ons 2. It will thus beseen that the oil, after passing through the pump, is supplied underpressure to the crank shaft bearings, then to the crank pin bearing,then to the wrist pin bearing; it also being observed that each of thesebearings is provided with a groove in order to retain a quantity of oiland form a clear passage between the various bearings. The other branchleading from pipe 14 consists of a pipe 27 leading up to the rvalvecasing 28 in which is a sliding plug 29 having ports 30, 31, 32, theports 31 being so spaced as to always leave communication between pipe27 and the pipe 33 which leads to each cylinder. For supplying oilbetween the piston and the cylinder, these oil pipes pass through theWater jacket. I

The valve casing 28 is adapted to be attached to the vehicle dash 35 andthe spring 36 normally holds the plug 29 in such position that the port32 is closed. In order to operate the valve 29, a push pin 38 isprovided which can be pushed inward and thereby connect port 32 with apipe 39 leading to the pressure gage 40 without cutting olf thecommunication between pipes 27 and 33. The gage 40 consists of a. coilof expansible tubing having a pointer connected therewith by amultiplying arrangement so that the pointer will have a considerablerange of travel by a slight movement of the coil and thereby indicate onthe dial of the gage units of pressure.

With the oiling systems commonly employed in automobiles the operatorcannot tell whether the oil is being supplied to the various bearingsproperly. By this gage mechanism he has simply to open the valve toadmit the pressure to the gage in order to ascertain Whether there isthe requisite pressure in the system. If one of the ,pipes be plugged,the gage would indicate ahigher or lower pressure than the designedoperating pressure, in this way the trouble can be observed aud remediedbefore the engine has been damaged. Furthermore, it will be observedthat by this invention a forced feed oiling system is provided whereinthe crank pin and connecting rod bearings are directly lubricated by oilunder pressure, without depending upon any splash there may be by reasonof the cranks dipping into the oil in the reservoir S. Also, it will beseen that oil is supplied to the crank shaft bearings under pressuredirectly from the pump; likewise rendering the oil supply independent ofthe splash, and also of the inclination of the vehicle, there beingprovided at any angle of the vehicle, Whether ascending, or descending ahill, a sufficient supply of oil from the reservoir 8 through the pump.

Modifications and changes in the specific form of parts and arrangementmay be made without departing from the scope of the invention.

Having thus described the invention, what .l claim is:

1. The combination in an oil feeding system with an engine, a reservoirand a pump, of means for supplying the bearings with oil under pressureand manually controllable means adapted to indicate an Vobstruction tothe flow.

2. The combination 1n an oil feeding system with al1 engine, a reservoirand a pump,

shaft bearings, and the other branch to the interior cylinder wall, agage responsive to pressure for indicating the condition of the system,and a manual, normally inoperative valve for controlling said gage.

4. In an oil feeding system, the combination of a reservoir, a pump, abranched pump discharge pipe, one branch leading to the shaft bearingsand another to the cylinder wall, a branch from the main -pump dischargepipe containing a fluid pressure indicator, and a normally closed valvecontrolling said indicator.

In testimony whereof I aliix my signature, in presence of two witnesses.

GUID() F ORN ACA.

Witnesses:

J. S. JOSEPHS, LoUis ALLAN.

